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Вид документа : Однотомное издание
Шифр издания : В37
Автор(ы) : Пичугин, Константин Николаевич
Заглавие : Эффекты квантовой интерференции в электронном транспорте через двумерные наноструктуры : автореф. дисна соиск. уч. степени канд. физ.-мат. наук. 01.04.07 - физ. конд. сост.
Выходные данные : Красноярск, 2007
Колич.характеристики :18 с
Коллективы : Российская академия наук, Сибирское отделение РАН, Институт физики им. Л.В. Киренского Сибирского отделения РАН, Институт физики полупроводников Сибирского отделения РАН
Примечания : Библиогр.
ГРНТИ : 29.19.16 + 29.31.21
Предметные рубрики: Наноструктуры-- Свойства электромагнитные-- Интерференция квантовая-- Исследование
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Вид документа : Однотомное издание
Шифр издания : В31/П 36 рукописный текст
Автор(ы) : Пичугин, Константин Николаевич
Заглавие : Эффекты квантовой интерференции в электронном транспорте через двумерные наноструктуры : дис. на соиск. уч. степени канд. физ.-мат. наук : 01.04.07
Выходные данные : Красноярск, 2007
Колич.характеристики :112 с
Коллективы : Российская академия наук, Сибирское отделение РАН, Институт физики им. Л.В. Киренского Сибирского отделения РАН
Примечания : Библиогр.
ГРНТИ : 29.19 + 29.05.33
ББК : В31я031
Экземпляры :ДС(1)
Свободны : ДС(1)
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Пичугин, Константин Николаевич, Садреев, Алмаз Фаттахович
Заглавие : Осцилляции Ааронова-Бома в двумерных мезоскопических кольцах
Коллективы : Российская академия наук, Сибирское отделение РАН, Красноярский научный центр Сибирского отделения РАН, Конференция молодых ученых [КНЦ СО РАН]
Место публикации : Конференция молодых ученых: материалы конф./ Рос. акад. наук [и др.]. - Красноярск, 1997. - С. 77-78
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mendez-Bermudez J. A., Luna-Acosta G. A., Seba P., Pichugin K. N.
Заглавие : Understanding quantum scattering properties in terms of purely classical dynamics: Two-dimensional open chaotic billiards
Место публикации : Phys. Rev. E: AMER PHYSICAL SOC, 2002. - Vol. 66, Is. 4. - Ст.46207. - ISSN 1539-3755, DOI 10.1103/PhysRevE.66.046207
Примечания : Cited References: 34
Предметные рубрики: BALLISTIC-TRANSPORT
POINCARE SECTIONS
CAVITIES
EIGENFUNCTIONS
LOCALIZATION
CHANNEL
Ключевые слова (''Своб.индексиров.''): chaos theory--electron tunneling--laser applications--nonlinear systems--probability--waveguide components--chaotic motion--microlasers--quantum scattering--scattering probability--quantum theory--article
Аннотация: We study classical and quantum scattering properties of particles in the ballistic regime in two-dimensional chaotic billiards that are models of electron- or micro-waveguides. To this end we construct the purely classical counterparts of the scattering probability (SP) matrix \S(n,m)\(2) and Husimi distributions specializing to the case of mixed chaotic motion (incomplete horseshoe). Comparison between classical and quantum quantities allows us to discover the purely classical dynamical origin of certain general as well as particular features that appear in the quantum description of the system. On the other hand, at certain values of energy the tunneling of the wave function into classically forbidden regions produces striking differences between the classical and quantum quantities. A potential application of this phenomenon in the field of microlasers is discussed briefly. We also see the manifestation of whispering gallery orbits as a self-similar structure in the transmission part of the classical SP matrix.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pervushin V. N., Arbuzov A. B., Barbashov B. M., Nazmitdinov R. G., Borowiec A., Pichugin K. N., Zakharov A. F.
Заглавие : The general relativity with conformal units
Место публикации : Физ. элементар. частиц и атом. ядра: Объединенный институт ядерных исследований, 2012. - Т. 43, № 5. - P.1319-1331. - ISSN 0367-2026
Примечания : Библиогр.: 42 назв. - The authors would like thank M. Bordag, S. Deser, D. Ebert, A. Efremov, V. Gershun, Yu. Ignatev, E. Lukierski, and A. Zheltukhin for useful discussions. VNP and AB were supported in part by the Bogoliubov-Infeld program. AFZ is grateful to the JINR Directorate for a support.
Аннотация: General Relativity rewritten in conformal units identifies conformal intervals with the real observational distances. This identification gives a base to explain all epochs of the Universe evolution including Ia supernova luminosity long distance-redshift relation by the dominance of the Casimir vacuum energy of all physical fields. A set of arguments is discussed in favor that SNe Ia data in the conformal units can be an evidence of the conformal twistor structure of the space-time as a nonlinear realization of the affine group, like the nonlinear realization of chiral symmetry and phenomenological Lagrangian is evidence of the quark structure of hadrons.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pervushin V. N., Arbuzov A. B., Barbashov B. M., Nazmitdinov R. G., Borowiec A., Pichugin K. N., Zakharov A. F.
Заглавие : The general relativity with conformal units
Место публикации : Phys. Part. Nuclei: MAIK Nauka-Interperiodica / Springer, 2012. - Vol. 43, Is. 5. - P.682-688. - ISSN 1063-7796, DOI 10.1134/S1063779612050310
Примечания : Cited References: 42. - The authors would like thank M. Bordag, S. Deser, D. Ebert, A. Efremov, V. Gershun, Yu. Ignatev, E. Lukierski, and A. Zheltukhin for useful discussions. VNP and AB were supported in part by the Bogoliubov-Infeld program. AFZ is grateful to the JINR Directorate for a support.
Предметные рубрики: ACCELERATING UNIVERSE
COSMOLOGICAL CONSTANT
SUPERNOVA
SPACE
DECELERATION
GRAVITY
Аннотация: General Relativity rewritten in conformal units identifies conformal intervals with the real observational distances. This identification gives a base to explain all epochs of the Universe evolution including Ia supernova luminosity long distance-redshift relation by the dominance of the Casimir vacuum energy of all physical fields. A set of arguments is discussed in favor that SNe Ia data in the conformal units can be an evidence of the conformal twistor structure of the space-time as a nonlinear realization of the affine group, like the nonlinear realization of chiral symmetry and phenomenological Lagrangian is evidence of the quark structure of hadrons.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Sadreev A. F., Bulgakov E. N., Maksimov D. N., Pichugin K. N.
Заглавие : Symmetry breaking in open quantum nonlinear systems
Место публикации : Nonlinear phenomena in complex systems: from nano to macro scale: Springer, 2015. - P.235-252. - (NATO science for peace and security series C: Environmental security). - DOI 10.1007/978-94-017-8704-8_17. - ISBN 978-94-017-8704-8. - ISBN 978-94-017-8703-1
Аннотация: We consider symmetry breaking in the simplest open quantum nonlinear systems such as dimer and plaquette of four nonlinear sites coupled with linear tight-binding wires. If the solution is stationary, the total Hilbert space can be projected into the inner states of the dimer or plaquette by the Feshbach procedure. That derives a nonlinear analogue of the Lippmann-Schwinger equation with injected wave as a source. By neglecting radiation shifts the Lippmann-Scwinger equation limits to the coupled mode theory equations widely used in optics. We show three scenarios for the transmission through the nonlinear quantum systems. The first one inherits the linear case and preserves the symmetry. In the second scenario the symmetry is broken because of different intensities at the dimer sites. In the third scenario the intensities at the sites are equaled but phases of complex wave function are different. That results in a vortical power flow between the nonlinear sites similar to the DC Josephson current. We show how the phenomenon of symmetry breaking can used for switching of outputs symmetrically coupled to the quantum dimer . Also we reveal a domain in the parameter space where none of stationary solutions exist. As a result injection of a monochromatic symmetric wave gives rise to emission of nonsymmetric satellite waves with energies different from the energy of the incident wave. Thus, the response exhibits non monochromatic behavior.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bulgakov E. N., Shadrina, Galina, Sadreev A. F., Pichugin K. N.
Заглавие : Super-bound states in the continuum through merging in grating
Колич.характеристики :11 с
Место публикации : Phys. Rev. B. - 2023. - Vol. 108, Is. 12. - Ст.125303. - ISSN 24699950 (ISSN), DOI 10.1103/PhysRevB.108.125303. - ISSN 24699969 (eISSN)
Примечания : Cited References: 70. - We thankful Yi Xu and Zhanyuan Zhang for numerous fruitful discussions. The work was supported by Russian Science Foundation Grant No. 22-12-00070
Аннотация: We consider bound states in the continuum (BICs) in grating composed of infinitely long silicon rods of rectangular cross-section. We reveal merging off-Γ Friedrich-Wintgen BIC with symmetry protected BIC. We present CMT and multipole decomposition theory, complementing each other, to analyze the merging phenomenon. The theories show a crossover of the behavior of Q factor from standard inverse square law k-2x,z towards extremely fast boosting law k-6x,z in momentum space. In turn that crossover gives rise to another crossover from Q ~ N2 to Q ~ N3 for symmetry protected quasi-BIC in finite grating of N rods owing to suppression of radiation leakage of quasi-BIC mode from surface of grating. As a result, the Q factor of quasi-BIC is determined by residual leakage from ends of grating. We show numerically that this leakage can also be suppressed considerably if grating is stretched from the ends.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhang, Zhanyuan, Bulgakov E. N., Pichugin K. N., Sadreev A. F., Xu, Yi, Qin, Yuwen
Заглавие : Super quasibound state in the continuum
Место публикации : Phys. Rev. Appl. - 2023. - Vol. 20, Is. 1. - Ст.L011003. - ISSN 23317019 (eISSN), DOI 10.1103/PhysRevApplied.20.L011003
Примечания : Cited References: 60. - Zhanyuan Zhang and Yi Xu would like to thank the suggestions from Dr Meng Kang and Professor Chengbo Mou. This work is supported by National Natural Science Foundation of China (62222505), Russian Science Foundation with Grant No. 22-12-00070 and the Guangdong Introducing Innovative, Entrepreneurial Teams of “The Pearl River Talent Recruitment Program” (2019ZT08X340). K. Pichugin,E. Bulgakov and A. Sadreev acknowledge the state assignment of Kirensky Institute of Physics
Аннотация: Avoided crossing of resonances and merging multiple bound states in the continuum (BICs) are parallel means for tailoring the physical properties of BICs. Herein, we introduce a concept of super quasi-BIC for photonic crystal (PhC) systems where its quality (Q) factor is boosted in both parametric and momentum spaces. A super quasi-BIC with substantial enhancement of Q factor can be achieved in a finite PhC by combining avoided crossing of two symmetry-protected (SP) quasi-BICs in parametric space and merging BICs in momentum space simultaneously. Of note, analytical theory shows that the proposed mechanism results in the transition of asymptotic behavior of the Q factor over the numbers of resonators from N2 to exclusive N3 for SP BICs, which is highly significant for realizing quasi-BICs in a compact PhC. Microwave experiments are performed to validate the theoretical results. Our results provide a paradigm shift for manipulating the physical properties quasi-BICs in finite PhC structures, which can also be generalized to the two-dimensional PhC slab case. It would facilitate various applications, including but not limited to low-threshold lasing and high figure-of-merit sensing, etc.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Berggren K. F., Pichugin K. N., Sadreev A. F., Starikov A. A.
Заглавие : Signatures of quantum chaos in the nodal points and streamlines in electron transport through billiards
Разночтения заглавия :us: Signature of quantum chaos in the nodal points and streamlines in electron transport through billiards
Место публикации : JETP Letters. - 1999. - Vol. 70, Is. 6. - P.403-409. - ISSN 0021-3640, DOI 10.1134/1.568188
Примечания : Cited References: 13
Предметные рубрики:
Аннотация: Streamlines and the distributions of nodal points are used as signatures of chaos in coherent electron transport through three types of billiards: Sinai, Bunimovich, and rectangular. Numerical averaged distribution functions of the nearest distances between nodal points are presented. We find the same form for the Sinai and Bunimovich billiards and suggest that there is a universal form that can be used as a signature of quantum chaos for electron transport in open billiards. The universal distribution function is found to be insensitive to the way the averaging is performed (over the positions of the leads, over an energy interval with a few conductance fluctuations, or both). The integrable rectangular billiard, on the other hand, displays a nonuniversal distribution with a central peak related to partial order of nodal points for the case of symmetric attachment of the leads. However, cases with asymmetric leads tend to the universal form. Also, it is shown how nodal points in the rectangular billiard can lead to "channeling of quantum flows," while disorder in the nodal points in the Sinai billiard gives rise to unstable irregular behavior of the flow. (C) 1999 American Institute of Physics. [S0021- 3640(99)00718-5].
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